former Council Bluffs Carnegie Library building
E431360
The former Council Bluffs Carnegie Library building is a historic Carnegie-funded library structure in Council Bluffs, Iowa, now repurposed to house the Union Pacific Railroad Museum.
All labels observed (1)
| Label | Occurrences |
|---|---|
| former Council Bluffs Carnegie Library building canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4338230 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: former Council Bluffs Carnegie Library building Context triple: [Union Pacific Railroad Museum, occupiesBuilding, former Council Bluffs Carnegie Library building]
-
A.
United States Courthouse in Council Bluffs
The United States Courthouse in Council Bluffs is a federal courthouse facility in Council Bluffs, Iowa, that serves as one of the venues for federal judicial proceedings in the Southern District of Iowa.
-
B.
Iowa Judicial Branch Building
The Iowa Judicial Branch Building is the courthouse complex in Des Moines that houses the Iowa Supreme Court and other key components of the state’s judicial system.
-
C.
Iowa City Hall
Iowa City Hall is the central municipal government building of Iowa City, housing key administrative offices and serving as the primary venue for local governmental functions and public meetings.
-
D.
Coralville Public Library
Coralville Public Library is the main public library serving the residents of Coralville, Iowa with lending materials, community programs, and information services.
-
E.
Wright County Courthouse
The Wright County Courthouse is the main judicial and administrative government building serving Wright County, located in Clarion, Iowa.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: former Council Bluffs Carnegie Library building Target entity description: The former Council Bluffs Carnegie Library building is a historic Carnegie-funded library structure in Council Bluffs, Iowa, now repurposed to house the Union Pacific Railroad Museum.
-
A.
United States Courthouse in Council Bluffs
The United States Courthouse in Council Bluffs is a federal courthouse facility in Council Bluffs, Iowa, that serves as one of the venues for federal judicial proceedings in the Southern District of Iowa.
-
B.
Iowa Judicial Branch Building
The Iowa Judicial Branch Building is the courthouse complex in Des Moines that houses the Iowa Supreme Court and other key components of the state’s judicial system.
-
C.
Iowa City Hall
Iowa City Hall is the central municipal government building of Iowa City, housing key administrative offices and serving as the primary venue for local governmental functions and public meetings.
-
D.
Coralville Public Library
Coralville Public Library is the main public library serving the residents of Coralville, Iowa with lending materials, community programs, and information services.
-
E.
Wright County Courthouse
The Wright County Courthouse is the main judicial and administrative government building serving Wright County, located in Clarion, Iowa.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
Carnegie library
ⓘ
historic building ⓘ library building ⓘ |
| architecturalStyle | Beaux-Arts ⓘ |
| category |
Buildings and structures in Council Bluffs, Iowa
ⓘ
Carnegie libraries in Iowa ⓘ Libraries on the National Register of Historic Places in Iowa ⓘ Railroad museums in Iowa ⓘ |
| city | Council Bluffs ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| fundedBy |
Andrew Carnegie
ⓘ
Carnegie Corporation ⓘ
linked to:
Carnegie Corporation of New York
|
| hasCollectionType |
Union Pacific Railroad artifacts
ⓘ
railroad history exhibits ⓘ |
| hasCurrentUse | Union Pacific Railroad Museum ⓘ |
| heritageDesignation |
NRHP-listed
ⓘ
listed on the National Register of Historic Places ⓘ |
| houses | Union Pacific Railroad Museum ⓘ |
| locatedIn |
Council Bluffs, Iowa
ⓘ
linked to:
Council Bluffs
Iowa ⓘ Pottawattamie County, Iowa ⓘ United States ⓘ
linked to:
United States of America
|
| material |
brick
ⓘ
stone ⓘ |
| NRHPType | building ⓘ |
| operator | Union Pacific Railroad Museum ⓘ |
| originalFunction | public library ⓘ |
| ownedBy |
City of Council Bluffs
ⓘ
linked to:
Council Bluffs
|
| partOf |
Carnegie libraries in Iowa
ⓘ
linked to:
Carnegie libraries
Carnegie libraries in the United States ⓘ |
| publicAccess | yes ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: former Council Bluffs Carnegie Library building Description of subject: The former Council Bluffs Carnegie Library building is a historic Carnegie-funded library structure in Council Bluffs, Iowa, now repurposed to house the Union Pacific Railroad Museum.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
Union Pacific Railroad Museum
→
occupiesBuilding
→
former Council Bluffs Carnegie Library building
ⓘ